Submarine boat.



J. BARRAJA-FRAUENFELDER.

SUBMARINE BOAT.

APPLIQAHQN. FILED ABR- 13. 191.5.

Patented Nov. 2, 1S '3.

3 SHEETS-SHEET I.

//VVE/VTOR W WIN/E8858:

J. BARRAJA-FRAUENFELDER.

SUBMARINE BOAT.

APPLICATION FILED APR. I3. 1915.

1,1 58,883. Patent-ed Nov. 2, 1915.

3 SHEETSSHEET 2.

J. BARRAJA-FRAUENFELDER.

SUBMARINE BOAT.

APPLICATION FILED APR. 13. 1915.

I 1 158 883 Patented Nov. 2, 1915.

3 SHEETS-SHEET 3- /0 WITNESSES. llVVE/Vgf? m 6 By ATTOR/VE ITED STATESran JOSEPH BARRAJA-FRAUENFELDER, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TOTHE LAKE TORPEDO BOAT COMPANY OF MAINE, OF BRIDGEIPORT, CONNECTICUT, ACOR- PORATION OF MAINE.

SUBMARINE BOAT.

Specification of Letters Patent.

Application filed April 13, 1915. Serial No. 21,036.

To all whom it may concern:

Be it known that I, JOSEPH BARRAJA- FRAUENFELDER, a citizen of theUnited States, residing at Bridgeport, in the county of Fairfield andState of Connecticut, have invented certain new and useful Improvementsin Submarine Boats, of which the following is a specification.

The invention relates to improvements in submarine or submersible boats,and particularly to the construction and arrangement of boiler-rooms forsuch class of boats such as that shown and described in United StatesLetters Patent granted to me April 6, 1915, No. 1,134,940, and assignedto The Lake Torpedo Boat Company of Maine.

The object of the invention is to provide an arrangement to permitcommunication between the forward and after ends of the boat when theboiler-room is closed without necessitating passage through theboilerroom, to thus not only prevent the highly heated air of theboiler-room from escaping into the working or living compartments of theboat through the opening of the doors leading intothe boiler-room, butalso to avoid the discomfort and danger incident to passing through thehighly heated air contained within the room when the ventilators thereofare closed.

The invention consists in arranging a compartment within the main hullof the boat, providing a boiler-room of such size so as to provide achamber around and at the ends of the compartment or boiler-room, saidchamber providing a water-jacket which is designed to be filled withwater from the surrounding body of water when the boat is submerged, oran insulating air space or jacket when the said chamber is empty ofwater; in the construction of air locks at the ends of the compartment,and in the arrangement of a passageway between said air-locks; thearrangement being such to'permit one to pass from one end of the boat tothe other without passing through the boiler-room when the doors leadingthereto are closed, to thus prevent the heat within the boiler-room fromescap ing into the working or living compartments of the boat.

The invention further consists in details of construction andarrangement of parts as will be hereinafter fully described.

In the drawings illustrating the invention, in the several figures ofwhich like parts are similarly designated, Figure 1 is a diagrammaticvertical longitudinal section of the amidships portion of a submarine orsubmersible boat. Fig. 2 is a horizontal section of the same drawn onthe line a-w of Fig. 1. Fig. 3 is a transverse section on a larger scaledrawn on'the line 6-?) of Fig. 1. Fig. 4 is a similar view drawn on theline c0 of Fig. 1. Fig. 5 is a similar view to Fig. 4 illustrating aslightly different form of passageway connecting the airlocks. Fig. 6 isa detail horizontal section drawn on a larger scale on the line d-d ofFig. 1.

1 designates the main hull of a submarine or submersible boat of anyimproved design, in the present illustration shown clrcular in crosssection, and as is usual, is constructed of ribs or frames 1 and shellplating 1". Within the hull and preferably at amidships, is arranged acompartment 2, providing a boiler-room substantially cylindrical incross section, said compartment having its ends closed by bulkheads 3which are connected airand water-tight to the ends of said compartment,and to the plating or ribs of the main hull l as shown, the bulkheadsbeing provided with doorways or openings 4 leading into the boiler-roomwhich are controlled by inwardly opening doors 5. Spaced from thebulkheads 3 are bulkheads 6, having their edges connected airandwater-tight to the shell plating or ribs of the main hull 1, and thesebulkheads 6 are also provided with doorways or openings 7 controlled byoutwardly opening doors 8. In the spaces thus formed between thebulkheads are arranged substantially U- shaped frames 9, having theirforward and rear edges connected airand water-tight to the respectivebulkheads 3 and 6, and their lower edges connected to the plating of themain hull 1, thus providing air-tight compartments or vertical passages10, which I shall hereafter refer to as air-locks. In the space thusformed below the boiler-room 2 and the skin of the main hull 1, isarranged longitudinal partitions 11 providing a longitudinal passageway12, said partitions 11 having their upper and lower edges connectedairand water-tight to the bottom of the boiler-room and to the platingof the Patented Nov. 2, 1915.

main hull respectively, and their ends likewise connected to thebulkheads 3. The said bulkheads are provided with doorways or openings13 establishing communication between said passageways 12 and saidairlocks 10, the said openings 13 being controlled by doors let openingwithin said airlocks. Vithin the air-locks 10, immediately below theopenings 1 and 7, are arranged arched top 16. In either construction,however, it will be noted the partitions 11, pro vide longitudinalsupporting girders for the boiler-room 2.

Like the construction shown in my aforesaid application, the space 2around the boiler-room and the spaces 2 at the ends thereof, aredesigned to be filled with water when the boat is operating submerged,or in a semi-submerged condition, and thus form a water-jacket aroundthe boiler-room, whereby to confine the highly heated air to theboiler-room.

The partitions or bulkheads 3 are provided with openings 3' Fig. 3, topermit free circulation of water between the spaces 2' and 2". Anysuitable means may be provided for controlling the inlet and expulsionof water to and from the spaces 2 and 2", but as this feature forms nopart of the present invention, it is not thought necessary to illustrateor describe the same. I do not wish to be limited to the construction ofadmitting water to the space 2 as it will be obvious that the openings 3in the bulk heads 3 may be dispensed with and the said spaces 2 thusconverted into air-chambers, or air-locks when the doors controlling theopenings in the bulkheads are closed. When the chambers or spaces 2 areused as airlooks, it will be understood that the frames 9 may bedispensed with.

The boiler-room will be supported within the main hull intermediate itsends by suitable struts (not shown), but as this detail will be wellunderstood by anyone skilled in the art to which the invention relates,it is not thought necessary to show it.

In operation, when the boat is submerged and the ventilators, not shown,of the boilerroom, and of course the hatches and ventilators leadinginto the main hull of the boat have been closed, the doors 5, 8 and 14are also closed and securely locked air-tight. \Vhen it is desired topass from one end of the boat to the other, one first enters eitherair-lock 10, as the case may be, and closes and locks the door 8 leadinginto said airlock. The hinged portion 15 of the grating in said air-lockis then lifted so that passage may be had down through the verticalportion of said air-lock; the door 1 1 controlling the opening into thepassage 12 from said air-lock 10 is then opened to permit entrance intothe passage 12 after which the said door 14 is closed and locked. Thenone has traversed the passage, the door 141 at the opposite end thereofis then opened to permit entrance into the lower end of the air-lock 10,after which the said door 14 is closed and locked. The person thenclimbs up the air-lock 10, and lifts the hinged section 15 of thegrating 15 and then opens the door 8 leading into the main hull andpasses out into the opposite end of the boat, thus avoiding thenecessity of passing through the highly heated atmosphere of theboilerroom. It will be understood that in passing from one end of theboat to the other, the several doors leading into the air-locks and thepassage 12 are immediately closed when entering the air-locks and thepassage, so that but little of the heat from the boilerroom is permittedto escape into the main hull of the boat when one passes from one end ofthe boat to the other.

20 designates a horizontal partition arranged in the boiler-room and issupported by longitudinal girders 21 as shown in Figs. at and 5. While Ihave shown the boilerroom as substantially cylindrical in cross section,I do not wish to be confined to this particular form, as it is obviousthe bottom of the boiler-room may be provided with a substantially flatfloor and the partition or floor 20 thus dispensed with.

IVhile I have particularly described a construction best adapted for thepurpose as set forth, it is obvious that various changes in the form,proportion and the minor details of construction may be resorted towithout departing from the spirit of or sacrificing any of theprinciples of the invention.

\Vhat I claim is 1. A submarine or submersible boat, having aboiler-room arranged therein, air-locks formed at the ends of theboiler-room and communicating therewith and with the interior of theboat, a passageway arranged under the boiler-room and communicating withsaid air-locks, and doors controlling all of said communications.

2. A submarine boat, having a boiler-room arranged therein and spacedfrom the main hull of the boat, bulkheads forming closures for the endsof said boiler-room and connected thereto airand water-tight, saidbulkheads being connected to the main hull, transverse bulkheadsarranged within the main hull and connected thereto airand water-tight,said bulkheads being spaced from the bulkheads closing the ends of theboiler-room, doorways or openings formed in said bulkheads, doors forsaid doorways or openings, a passageway arranged in the space formedbetween the bottom of said boiler-room and the main hull andcomn'iunicating with the spaces formed between the said bulk-heads,doors controlling said communications, and hinged gratings arranged insaid latter spaces.

8. A submarine boat, having a compartment arranged therein providing aboiler room and spaced from the main hull of the boat, bulkheads formingclosures for the ends of said compartment or boiler-room and connectedairand water-tight to the main hull of the boat, longitudinal partitionsarranged in the space formed by said compartment and the hull of theboat and in the lower end thereof, said longitudinal partitions beingconnected airand watertight to said compartment or boiler-room and tothe main hull, and to said bulkheads, transverse partitions or bulkheadsarranged within the main hull and spaced from said first mentionedbulkheads, doorways arranged in said bulkheads, and doors controllingsaid doorways, all substantially as and for the purpose specified.

4. A submarine or submersible boat, havi lg a compartment arrangedwithin the main hull thereof providing a boiler-room and spaced from themain hull of the boat, bulkheads closing the ends of said compartment orboiler-room and having their edges connected air and water-tight to saidmain hull, transverse partitions or bulkheads spaced from said firstmentioned bulkheads and having their edges connected airand watertightto said main hull, all of said bulkheads having doorways formed therein,doors controlling said doorways, frames arranged in the spaces formed byand between the adjacent bulkheads providing air-locks, a passagewayarranged under said boiler-room and communicating with said air-locks,and doors controlling said communications.

In testimony whereof I have hereunto set my hand this 9th day of April,A. D. 1915.

JOSEPH BARRAJA-FRAUENFELDER. lVitnesses C. E. ADAMS, M. E. HrroHcooK.

